Hello retdmic
The System Idle Process is just that, an idle process. You can't stop it, you wouldn't want to or the system would freeze. The processor must be kept fed constantly with instructions. It's the OS's job is to keep the processor busy, in NT/2K, the System Idle Process does this.
It says 100% utilization, but it's not smoking your processor, it's really doing nothing and doesn't impact performance.
It lets you know how much space is NOT being used by other processes.
Here are some things which can help
1 In msconfig, disable everything not needed at start up. It will also tell you if anything nasty is in there.
Start/Run and type in
msconfig
OK
Startup Tab
Keep the page open then go to link below.
http://www.sysinfo.org/startuplist.php
Read the Key at top of page. Use the Search box to check all your entries
When you reboot you will get a message saying you have started in "Selective Startup" Click "Don`t show this message again" then OK
2 Run scans to check for malware
Housecall http://housecall.trendmicro.com/
SUPERAntiSpyware http://www.superantispyware.com/
Download the free version
3 What do you have running all the time in the background? If you use Automatic Updates it will slow down the system. Norton products will slow down the machine too.
4 Run CCleaner
Do not use the registry cleaner. Make sure to delete all temporary files
You should do this regularly
5. Go to
IE/Tools/Internet Options/Advanced/Security
Put a check in "Empty temporary internet files folder when browser is closed"
6 Go to
Windows Explorer/Tools/Folder Options/View
Uncheck "Automatically search for network folders and printers"
7. Defrag regularly
- Uninstall any programs you don`t use/need
See if it is any faster after that.